.title{
    text-align: center;
}
.header{
    text-align: center;
}
.add-btn{
    background-color: yellowgreen;
    color: honeydew;
}

hr{
    width: 75%;
}

ul{
    text-align: center;
}

.item{
    display: inline-block;
    height: 2rem;
    width: 80%;
    margin: 0 auto;
}
.content{
    color: rgb(59, 185, 235);
    float: left;
}
.del-btn{
    background-color: tomato;
    color: honeydew;
    float: right;
}

.remarks{
    text-align: center;
    font-size: small;
    color: silver;
}